Prosecutors are investigating the Murakami fund for possible insider trading in connection with its Nippon Broadcasting System share transactions last year, sources said Friday.
Investigators from the Tokyo District Public Prosecutor's Office have questioned executives at the fund, led by former bureaucrat Yoshiaki Murakami, and others, including former Livedoor Co. executives, the sources said, adding they plan to question Murakami himself soon.
Livedoor, accused of accounting fraud, at one time held a large equity stake in NBS in a battle with Fuji Television Network Inc. for control of the radio station.
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